Design of Automobile Brake Lamp Fault Automatic Detection Circuit

Abstract

It is easy to have traffic accidents such as rear-ended due to automobile brake lamp failure. In order to solve this problem, we design a kind of auto detection circuit of brake lamp fault which uses current detection chip ACS712. The circuit applies Holzer induction to transform the current signal change into voltage change, and judges whether the brake lamp is damaged through the voltage comparison circuit. This circuit is simple, and fault display can be installed in the instrument panel. The design of detection circuit can accurately and reliably light alarm lamp, remind the driver timely maintenance, and effectively avoid unnecessary collision accident.